Re: What constitutes "character"? New Problem

From: Arjun Aggarwal (mrasool@sancharnet.in)
Date: Sat Nov 10 2001 - 12:41:33 EST


Hi

>Marco Cimarosti Wrote:
> Actually, Gaspar's idea of encoding half letters (and forming full letters
> by adding a danda) is *not* intrinsically worse than ISCII/Unicode idea of
> encoding full letters (and forming half letters by adding a halant).
>
> But the fact is that it is not even better: it is just *equivalent*!
>
> So, of course, there is no reason to throw away 10 years work just because
> one likes it better the other way round...

I just cannot see how a half character can be formed by adding a halant
after full letters.It does not lead to a visible half letter. It is the
visible half letter that we need here.
And though it is right that no one has a right to decide as to which method
to use : "encoding half letters (and forming full letters by adding a
danda) is *not* intrinsically worse than ISCII/Unicode idea of encoding
full letters (and forming half letters by adding a halant) " . But since
Devnagari has been used for a long time now and is being used as "encoding
half letters and forming full letters by adding a danda " in every field
 in Typewriters , Hindi fonts, books, typography , defence , teaching ) ,
this is the form that needs to be encoded in Unicode. There in no need to
throw away 10 years of work. The half characters can be encoded in place of
their full characters and a danda added in the code in a single reserved
space in the series.

>
> However, there may be some special cases when (s)he needs to force the
> half-consonant form, and I would like to repeat once again that both
Unicode
> and ISCII are flexible enough to also fit these special needs.
>
> In Unicode, the display of the half-consonant form can be forced by using
> the ZWJ control; ISCII achieves the same thing using the INV control:
>
> Unicode: ka + halant + ZWJ + ta
> ISCII: ka + halant + INV + ta
> result: half ka glyph + full ta glyph
>
> The same syntaxes can also be used to show the half consonant in isolation
> (which could be needed on grammar books, etc.):
>
> Unicode: ka + halant + ZWJ
> ISCII: ka + halant + INV
> result: half ka glyph

Would somebody tell me what a ZWJ control is and how to include it in
documents i create for Unicode compliant softwares.

Please comment on the above and give a possible solution.

With Regards
Arjun Aggarwal
mrasool@sancharnet.in



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